GB422121A - Improvements in and relating to current transformers - Google Patents

Improvements in and relating to current transformers

Info

Publication number
GB422121A
GB422121A GB16377/33A GB1637733A GB422121A GB 422121 A GB422121 A GB 422121A GB 16377/33 A GB16377/33 A GB 16377/33A GB 1637733 A GB1637733 A GB 1637733A GB 422121 A GB422121 A GB 422121A
Authority
GB
United Kingdom
Prior art keywords
minimum error
transformers
range
current
transformer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB16377/33A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB422121A publication Critical patent/GB422121A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
    • H01F27/422—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils for instrument transformers
    • H01F27/427—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils for instrument transformers for current transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)

Abstract

422,121. Current transformers. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin) June 7, 1933, No. 16377. Convention date, June 7, 1932. Drawings to Specification. [Class 38 (ii)] A composite current transformer comprises two or more transformers with their primaries and secondaries connected in series, at least one of the transformers being provided with premagnetization and each having a different current range in which minimum error occurs, the range of minimum error of one not coinciding with that of any of the others. In this way the range of minimum error is extended. The separate transformers may have cores of the same material or of different materials, a particular example being a nickel-iron core for the transformer with minimum error in the lower current range and a silicon-iron core for the transformer with minimum error in the upper current range. Specifications 286,431, [Class 38 (ii)], and 366,512 are referred to.
GB16377/33A 1932-06-07 1933-06-07 Improvements in and relating to current transformers Expired GB422121A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE422121X 1932-06-07

Publications (1)

Publication Number Publication Date
GB422121A true GB422121A (en) 1935-01-07

Family

ID=6462016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16377/33A Expired GB422121A (en) 1932-06-07 1933-06-07 Improvements in and relating to current transformers

Country Status (1)

Country Link
GB (1) GB422121A (en)

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